Long-billed Gnatwren Ramphocaenus melanurus
Version: 2.0 — Published July 16, 2020
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Demography and Populations
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Disease and Body Parasites
A single individual of the nominate subspecies (Minas Gerais) and another of rufiventris (El Salvador) both tested negative for infection by blood parasites (Plasmodium, Haemoproteus and Leucocytozoon) (255, 183). In one study in Panama (272), only one of ten individuals sampled was infected (with Haemoproteus). In Mexico, Beltrán and Pardiñas (273) reported that the single individual examined was infected with malaria (Plasmodium sp.). Although no sample size was provided, Sick (157) stated that he had found no parasites to date in Ramphocaenus. The only additional information on parasites of Long-billed Gnatwrens is the mention of a subcutaneous fly larva (cf. Philornis sp.?) on the chin of a fledgling that successfully left the nest (7), and documentation of a tick on a bird in São Paulo, Brazil .